CN109314965A - Method and apparatus for MU resource request - Google Patents
Method and apparatus for MU resource request Download PDFInfo
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- CN109314965A CN109314965A CN201780038529.4A CN201780038529A CN109314965A CN 109314965 A CN109314965 A CN 109314965A CN 201780038529 A CN201780038529 A CN 201780038529A CN 109314965 A CN109314965 A CN 109314965A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/0001—Arrangements for dividing the transmission path
- H04L5/0014—Three-dimensional division
- H04L5/0023—Time-frequency-space
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/21—Control channels or signalling for resource management in the uplink direction of a wireless link, i.e. towards the network
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
- H04L5/0055—Physical resource allocation for ACK/NACK
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/02—Traffic management, e.g. flow control or congestion control
- H04W28/0278—Traffic management, e.g. flow control or congestion control using buffer status reports
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/02—Traffic management, e.g. flow control or congestion control
- H04W28/06—Optimizing the usage of the radio link, e.g. header compression, information sizing, discarding information
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/56—Allocation or scheduling criteria for wireless resources based on priority criteria
- H04W72/566—Allocation or scheduling criteria for wireless resources based on priority criteria of the information or information source or recipient
- H04W72/569—Allocation or scheduling criteria for wireless resources based on priority criteria of the information or information source or recipient of the traffic information
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access, e.g. scheduled or random access
- H04W74/08—Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access]
- H04W74/0866—Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access] using a dedicated channel for access
- H04W74/0875—Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access] using a dedicated channel for access with assigned priorities based access
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/52—Allocation or scheduling criteria for wireless resources based on load
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/56—Allocation or scheduling criteria for wireless resources based on priority criteria
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access, e.g. scheduled or random access
- H04W74/002—Transmission of channel access control information
- H04W74/006—Transmission of channel access control information in the downlink, i.e. towards the terminal
Abstract
The aspect of the disclosure provides device for wireless communications.The device includes transceiver and processing circuit.Transceiver is configured as transmitting and receiving wireless signal.Processing circuit is configured as being configured to the field of buffer information report in data cell, determine the first zoom factor for scaling the first value and the second zoom factor for scaling second value, the buffer traffic of first value instruction first category, the buffer traffic of second value instruction classification, configuration field is to include the first zoom factor with the first value and the second zoom factor with second value, and data cell is supplied to transceiver for transmission to another device, resource of another device distribution for the transmission between two devices.
Description
It is incorporated by reference
The disclosure requires the " MU that the U.S. Provisional Patent Application No. submitted on June 21 in 2016 is 62/352,719
The equity of RESOURCE REQUEST, TID SELECTION, AND RESPONDING RULES ", entirely through reference by
It is incorporated herein.
Background technique
Background description provided herein is the purpose in order to which the context of the disclosure is generally presented.Inventor is currently assigned
Work, to working range described in background parts, and submit when can not be otherwise as the prior art
The aspect of description, neither clearly nor being impliedly recognized as the prior art for the disclosure.
WLAN (WLAN) is used in family, school, office building, shop, market etc., in finite region
Using being wirelessly connected two or more linking of devices to network.WLAN allows user to move around in finite region and still
So it is connected to network.In addition, WLAN can be configured as the connection for providing and arriving other networks, wide area network, internet etc..
In general, standard of the WLAN based on 802.11 standard of IEEE etc. and be implemented.
Summary of the invention
All aspects of this disclosure provide device for wireless communications.The device includes transceiver and processing circuit.Transmitting-receiving
Device is configured as transmitting and receiving wireless signal.Processing circuit is configured as being configured to buffer information report in data cell
The field of announcement determines the first zoom factor for scaling the first value and the second zoom factor for scaling second value, the
One value indicates that the buffer traffic of first category, second value indicate the buffer traffic of classification, and configuration field is to include having the first value
The first zoom factor and the second zoom factor with second value, and data cell is supplied to transceiver for transmission to another
One device, the resource of another device distribution for the transmission between two devices.
In this example, processing circuit is configured as that the sub- word of control is arranged using the identifier of instruction buffer information report
Section.In another example, first category and second category correspond respectively to service priority, and processing circuit is configured as wrapping
Include the task identifier of the service priority in field.
In embodiment, first category includes multiple service priority, and processing circuit is configured to determine that for contracting
The first zoom factor of the first value is put, the first value indicates the sum of the buffer traffic of multiple service priority.In another embodiment,
Data cell is null frame, and null frame does not have data field and has service quality (QoS) field, service quality (QoS) field
Buffer traffic information including the classification of specific transactions belonging to data cell.In addition, when specific transactions classification is the first business point
When a business in class and the classification of the second business is classified, the buffer information report in field dominates the buffering industry of qos field
Business information.
According to the aspect of the disclosure, processing circuit is configured as gathering data cell and one or more of the other data cell
It closes to generate aggregate data unit, and aggregate data unit is supplied to transceiver to be used for transmission other devices.
The aspect of the disclosure provides method for wireless communications.This method includes being configured in data cell by device
For the field of buffer information report, determine for scaling the first zoom factor of the first value and for scaling second value
Second zoom factor, the first value indicate that the buffer traffic of first category, second value indicate the buffer traffic of classification, will have first
First zoom factor of value and the second zoom factor with second value include in the field in data cell, and will carrying
The wireless signal transmission of data cell is to another device, the resource of another device distribution for the transmission between two devices.
The aspect of the disclosure provides the non-transitory computer-readable medium of storage program instruction, and the program instruction is for making
The processor obtained in device executes the operation for being used for communication.Operation includes: that buffer information report is configured in data cell
The field of announcement determines the first zoom factor for scaling the first value and the second zoom factor for scaling second value, the
One value indicate first category buffer traffic, second value indicate classification buffer traffic, by with the first value first scaling because
Son and the second zoom factor with second value include in field in data cell, and data cell are supplied to transmitting-receiving
Device circuit will be will carry the wireless signal transmission of data cell to another device, and another device distribution is between two devices
Transmission resource.
Detailed description of the invention
The various embodiments for being proposed as the exemplary disclosure will be described in detail with reference to the following drawings, wherein identical
Appended drawing reference indicate identical element, and wherein:
Fig. 1 shows the block diagram of network 100 according to an embodiment of the present disclosure；
Fig. 2 shows the flow charts of summary process 200 according to an embodiment of the present disclosure；
Fig. 3 shows the diagram of data cell example 300 according to an embodiment of the present disclosure；
Fig. 4 shows the diagram of data cell example 400 according to an embodiment of the present disclosure；
Fig. 5 shows the diagram of data cell example 500 according to an embodiment of the present disclosure；
Fig. 6 shows the diagram 600 according to an embodiment of the present disclosure for service selection；And
Fig. 7 shows the diagram 700 according to an embodiment of the present disclosure for block confirmation request.
Specific embodiment
Fig. 1 shows the block diagram of network 100 according to an embodiment of the present disclosure.Network 100 includes the first electronic equipment 110
With the second electronic equipment 160a-160n of one or more, the first electronic equipment and one or more second electronic equipments are with center
Coordination mode is carried out wireless communication to realize multi-user's (MU) downlink and/or uplink transmission.In the example of fig. 1,
First electronic equipment 110 is central coordinator device, the central coordinator device be configured as distribution for the first electronic equipment 110 with
The communication channel resources of transmission between second electronic equipment 160a-160n are (for example, time, frequency, resource element, resource list
Member), and coordinate the multi-user downlink between the first electronic equipment 110 and the second electronic equipment 160a-160n and/or on
Uplink transmission.In addition, to be configured as executing various operations all by the first electronic equipment 110 and the second electronic equipment 160a-160n
Such as multi-user resource request, business categorizing selection to support MU downlink and/or uplink to transmit, and improve frequency spectrum
Efficiency.
Network 100 includes using any suitable network technology (such as, wired, wireless, local area network (LAN), Wireless LAN
(WLAN), fiber optic network, wide area network (WAN), peer-to-peer network, internet etc.) and the interconnection that is implemented.In this example, the first electricity
Sub- equipment 110 and the second electronic equipment 160a-160n are in basic service set (BSS) 101, and basic service set (BSS) 101 makes
The first equipment 110 is interconnected with the second equipment 160a-160n with WLAN technology and is implemented.Network 100 includes other suitable
Interconnection (not shown) LAN, fiber optic network etc., to provide connection for the BSS101 that is connected to such as internet.
In embodiment, BSS101 is infrastructure type basic service set.First electronic equipment 110 is that access point (AP) is set
Standby and the second electronic equipment 160a-160n is station (STA) equipment.Second electronic equipment 160a-160n passes through the first equipment
110 communications, and the first equipment 110 includes the network hardware and software, and the network hardware and software are configured as, as bridge to allow
Wireless compliant device (such as, the second electronic equipment 160a-160n) is connected to the other parts of network 100.
The second electronic equipment of each of second electronic equipment 160a-160n can be any suitable set in network 100
It is standby, such as desktop computer, laptop computer, tablet computer, smart phone, personal digital assistant (PDA), intelligent hand
Table, smart camera, intelligence TV, intelligent recorder, wearable device, sensor etc..According to the aspect of the disclosure, in network 100
The second electronic equipment 160a-160n using the wireless standards of identical version or different editions, (such as various IEEE 802.11 are marked
It is quasi-) and be implemented.
In the example of fig. 1, the shared communication channel resources being used for transmission of the second electronic equipment 160a-160n, and the
One electronic equipment 110 is configured as the resource (for example, time, frequency, resource element, resource unit) of transmission distributing to first
Data cell (for example, frame) between electronic equipment 110 and the second electronic equipment 160a-160n exchanges.Second electronic equipment
160a-160n is configured as executing transmission according to the resource of distribution.For example, the first electronic equipment 110 is planned data disposably
Unit is respectively transmitted to the second electronic equipment group in the second electronic equipment 160a-160n.Second electronics involved in transmission is set
Standby group is referred to as the second electronic equipment of target.Transfer resource is distributed to the second electronic equipment of target by the first electronic equipment 110, and
And transmission is executed according to the resource allocation of transmission and is set so that data cell is respectively transmitted to the second electronics of target in identical traffic
It is standby.
In another example, the first electronic equipment 110 is predetermined respectively from the target among the second electronic equipment 160a-160n
Second electronic equipment receives data cell.Transfer resource is distributed to the second electronic equipment of target by the first electronic equipment 110.Example
Such as, the second electronic equipment of target executes transmission according to resource allocation respectively to the first electronic equipment in the identical duration
110 transmission data units, and the first electronic equipment 110 in for example identical predetermined lasting time from the second electronic equipment of target
Receive data cell.
Equipment (such as the first electronic equipment 110, the second electronic equipment 160a- according to the aspect of the disclosure, in BSS101
160n etc.) it is configured with the two or more data cells of polymerization technique transmission.In embodiment, the first electronic equipment 110
Two or more media access controls (MAC) protocol Data Unit (MPDU) is aggregated to identical destination equipment (for example,
Two electronic equipments), and form polymerization MPDU (A-MPDU).For example, the first electronic equipment 110 is by ethernet frame (for example, data
Unit) it is collected into identical destination equipment, and each frame is individually encapsulated using MAC header.Then, the first electronic equipment 110
The frame of encapsulation is grouped as to bigger frame.In this example, each ether is confirmed in the receiving side destination equipment property of can choose
Net frame.
In another embodiment, the second electronic equipment of one or more of second electronic equipment 160a-160n can incite somebody to action
Two or more MPDU are aggregated to the first electronic equipment 110, and form A-MPDU.For example, the second electronic equipment 160a and
Two electronic equipment 160n collect ethernet frame (for example, data cell) respectively, and are individually encapsulated each frame using MAC header.So
Afterwards, the frame of encapsulation is grouped as bigger frame by the second electronic equipment 160a and the second electronic equipment 160n respectively.In another implementation
In example, single MPDU is transferred to the first electronics by the second electronic equipment of one or more of second electronic equipment 160a-160n
Equipment 110.
In general, radio communication service is classified into business classification according to priority, and radio communication service is according to this
Business is classified and is buffered in queue (for example, fifo queue).In embodiment, radio communication service is primarily based on life
It is classified into access category at the application of the radio communication service, and then, each access category includes different priorities
Multiple service class.In this example, business classification used as task identifier (TID) priority and be identified.
Equipment (such as the first electronic equipment 110, the second electronic equipment 160a- according to the aspect of the disclosure, in BSS101
160n etc.) it is configured as polymerizeing the communication service from different business classification to improve efficiency of transmission.In this example, the second electronics
Equipment 160a polymerize the first MPDU of the first task identifier and the 2nd MPDU of the second task identifier, to form the first polymerization
A-MPDU；And the second electronic equipment 160n polymerize third task identifier the 3rd MPDU and the 4th task identifier the 4th
MPDU, to form the second polymerization A-MPDU.In this example, the first polymerization A-MPDU and the second polymerization A-MPDU are in transmission opportunity
(TXOP) respectively by the second electronic equipment 160a and the second electronic equipment 160n synchronous transfer during.In this example, the first business
Identifier is identical as the second task identifier.In another example, the first task identifier is different from the second task identifier.?
In another example, the business classification of the first polymerization A-MPDU is identical as the second polymerization business classification of A-MPDU.In another example
In, the business classification of the first polymerization A-MPDU is different from the second polymerization business classification of A-MPDU.In another embodiment, it comes from
The MPDU of two or more task identifiers is grouped together in an A-MPDU.
According to the aspect of the disclosure, the first electronic equipment 110 is configured to respond to from the second electronic equipment 160a-
The resource request of 160n and select business to classify.In embodiment, the second electronic equipment 160a-160n is configured as effectively making
Resource request is provided with communication channel resources.In this example, resource request is provided in the form that buffer information is reported.?
In example, the second electronic equipment 160a-160n is configured as what the transmission in data cell was classified for two or more business
Buffer report.In addition, the second electronic equipment 160a-160n is configured as gathering multiple data cells that there is buffer to report
It closes in aggregate data unit, therefore in this example, the buffer report for the classification of multiple business can be in a uplink
It is provided in the transmission of road.The example of the data cell of carrying buffer report is shown in Fig. 3-Fig. 5, and will refer to Fig. 3-
Fig. 5 is discussed in detail.
Specifically, in the example of fig. 1, the first electronic equipment 110 includes that first be coupled together as shown in Figure 1 is received
Send out device circuit 113 and the first processing circuit 120.In this example, first transceiver circuit 113 includes being coupled to first antenna
The first of 114 receives circuit 116 and the first transmission circuit 115, and the first processing circuit 120 includes mac controller 130, MAC
Controller 130 is configured as executing MAC layer operation, such as, processing MPDU and/or A-MPDU, extracts buffering from polymerization A-MPDU
The business classification etc. of the report of device information, selection for multiple users.
First transceiver circuit 113 is configured to receive and transmit wireless signal.For example, the first reception circuit 116 is matched
It is set to the electromagnetic wave in response to being captured by first antenna 114 and generates electric signal, handle electric signal to extract number from electric signal
Stream.In this example, the first transmission circuit 115 is configured as receiving and (such as manage from the digital stream of such as the first processing circuit 120
Manage frame, data frame etc.), radio frequency (RF) signal is generated to carry digital stream, and emits electromagnetism in the sky via first antenna 114
Wave carries the wireless signal of digital stream to transmit.
Second electronic equipment 160a includes the second transceiver circuit 163a and second processing circuit being coupled together
170a.Second transceiver circuit 163a includes the reception of the second transmission circuit 165a and second for being coupled to the second antenna 164a
Circuit 166a.Second processing circuit 170a includes mac controller 180a, and mac controller 180a is configured as executing MAC layer behaviour
Make, such as preparation buffer information report, polymerization have buffer information report frame, selection business classification, generate MPDU and/
Or A-MPDU etc..Other second electronic equipments are similarly configured with electronic equipment 160a.
Second transceiver circuit 163a is configured to receive and transmit wireless signal.For example, second receives circuit 166a quilt
It is configured to the electromagnetic wave in response to being captured by the second antenna 164a and generates electric signal, handle electric signal to extract number from electric signal
Word stream.In this example, the second transmission circuit 165a is configured as receiving the digital stream from such as processing circuit 170a (such as,
Management frame, data frame etc.), radio frequency (RF) signal is generated to carry digital stream, and is emitted in the sky via the second antenna 164a
Electromagnetic wave carries the wireless signal of digital stream to transmit.
According to the aspect of the disclosure, mac controller 180a is configurable to generate data cell to carry and be directed to two or more
The buffer information of a business classification, to allow data cell that more buffer informations are carried to the first electronic equipment 110, and
And therefore improve communication efficiency.In this example, buffer of the mac controller 180a to buffering for the data cell of business classification
In unacknowledged data unit length count.The Length Indication pending uplink industry of unacknowledged data unit in buffer
Business, and it is used as buffer information to request the resource transmitted for uplink.
In embodiment, mac controller 180a is configured to determine that the zoom factor for length information, therefore length is believed
Breath is provided with reduced bit number, therefore can be carried on a data cell for the length information of more business classification
In.In another embodiment, mac controller 180a is configured as the length information summation classified to multiple business, and makes to count
According to the length information of unit carrying summation.In another embodiment, mac controller 180a is configured as having different business point
Two or more data cells of the buffer information of class are aggregated in an aggregate data unit, therefore aggregate data unit is held
Carry the buffer information for more business classification.Carry the data cell of the buffer information of two or more business classification
Example is shown in Fig. 3-Fig. 5, and will be discussed in detail with reference to Fig. 3-Fig. 5.
In addition, mac controller 130 and mac controller 180a-180n are configured as polymerization and come according to the aspect of the disclosure
The data cell (for example, MPDU) classified from the business of selection is to generate aggregate data unit (for example, A-MPDU).In embodiment
In, main access category is selected by AP equipment (for example, first electronic equipment 110), by AP equipment or STA equipment (for example, the second electricity
Sub- equipment 160a) the auxiliary access category of selection.Mac controller 130 and mac controller 180a-180n, which are configured as polymerization, to be come independently
The data cell of access category polymerize the data cell from auxiliary access category or polymerize and carrys out autonomous access category and auxiliary connect
Enter the data cell of classification.The example of aggregate data unit is shown in Fig. 6, and will be discussed in detail with reference to Fig. 6.
In addition, mac controller 130 is configurable to generate data cell to carry for multiple according to the aspect of the disclosure
The block confirmation request of business classification.In this example, mac controller 130 will be directed to multiple pieces of confirmations of multiple business classification respectively
Claim frame is aggregated in bigger frame.In another example, mac controller 130 generates the frame for carrying more TID block confirmation requests.
In another example, more TID block confirmation requests are embedded in the field (such as, the field in trigger frame) of frame by mac controller 130
In.The example of data cell is shown in Fig. 7, and will be discussed in detail with reference to Fig. 7.
According to another aspect of the present invention, when STA equipment in multi-user transmission by AP equipment scheduling when, STA equipment into
Enter low priority EDCA state；When STA equipment in multi-user transmission not by AP equipment scheduling when, STA equipment enters high preferential
Grade EDCA state.Under high EDCA state, STA equipment obtains the transmission opportunity for business classification using EDCA, and uses
Higher transmission opportunity can be obtained in the EDCA of high-priority service classification.In embodiment, when STA equipment is in low preferential
When grade EDCA state, STA equipment, which is allowed to use, transmits urgent MPDU for the EDCA of high-priority service classification, such as, uses
In management frame, the block confirmation request frame etc. of audio access classification.
According to another aspect of the present disclosure, the AP equipment of the first electronic equipment 110 etc. can be determined for BSS101
Scheduling/non-scheduled operation mode, and beacon/management frame declaration scheduling/non-scheduled operation mode can be used.In this example,
AP equipment is configured to determine that for both the Dispatching Operation Mode of BSS101 and non-scheduled operation mode.For example, working as AP equipment
When declaring non-scheduled operation mode, all STA equipments enter non-scheduled operation mode；When AP equipment declares Dispatching Operation Mode
When, all STA equipments enter Dispatching Operation Mode.
In this example, AP equipment is configured to determine that the non-scheduled operation mode for BSS101, and STA equipment has
Determine the flexibility of operation mode.For example, all STA equipments enter non-scheduled when AP equipment declares non-scheduled operation mode
Operation mode；And when AP equipment declares Dispatching Operation Mode, each STA equipment is determining and enters Dispatching Operation Mode
Or non-scheduled operation mode, and AP equipment is notified via declaration.In another example, AP equipment, which is configured to determine that, is used for
The corresponding operating mode of STA equipment, and the operation mode is notified to STA equipment.
In embodiment, the first electronic equipment 110 and the second electronic equipment 160a-160n are according to Open Systems Interconnection
(osi model) and be implemented, the model have multiple layers, physics (PHY) layer such as from bottom to top, media access control
(MAC) layer, network layer etc..In this example, PHY layer includes the baseband processing circuitry in transceiver circuit and processing circuit.In reality
It applies in example, mac controller 130 and mac controller 180a-180n are implemented in the mac layer using circuit.In another embodiment
In, mac controller 130 and mac controller 180a-180n are implemented as executing the processor of software instruction.
Although should be noted that each equipment uses individual antenna in the example of fig. 1, network 100 can be by suitably
Modification is to use multiple-input and multiple-output (MIMO) antenna technology.
Fig. 2 shows the flow charts of summary process 200 according to an embodiment of the present disclosure.In this example, process 200 is by
Two electronic equipments execute, such as the second electronic equipment 160a.The process starts from S201 and proceeds to S210.
In S210, report that the determination of buffer information is made.In this example, the second electronic equipment 160a is in response to coming from
The signal (such as, polling message) of first electronic equipment 110 and determine report buffer information.In another example, the second electricity
Sub- equipment 160a initiates buffer information report.
Control identifier (ID) or QoS control field in S220, QoS data/null frame MAC header are configured as indicating
Buffer information report.In this example, the configurable field in frame (for example, HT control field) can be used for multiple purposes.
The field includes the one or more bits for being allocated for control identifier, which can be configured as instruction frame
The specific purpose of middle field.
In S230, the buffer corresponding to business classification is selected to report.In this example, the second electronic equipment 160a is true
Fixed business classification to be reported, and select to buffer the buffer of business classification.
In S240, the zoom factor for buffer information report is determined.In this example, a limited number of bit by with
In the length of report buffered data, and it is directed to different range and different resolution, different zoom factors is used.In example
In, the second electronic equipment 160a determines the length of buffered data to be reported, and determines zoom factor based on the length, so that
A limited number of bit can be with relatively high resolution ratio reported lengths in this example.
In S250, there is the configurable control field for the buffer information report of multiple business classification (for example, HT is controlled
Field processed or QoS control field) it is generated.In this example, the second electronic equipment 160a generates control field to include control mark
Know symbol and buffer information report.Each buffer information report includes zoom factor and the buffer information not scaled.
In S260, configurable control field is included in data cell.In this example, the second electronic equipment 160a is generated
Data cell with configurable control field.In another example, the second electronic equipment 160a polymerize multiple data cells with
Generate aggregate data unit.
In S270, the signal for carrying data cell is transmitted.In this example, the second electronic equipment 160a is generated data sheet
Member is carried to the wireless signal of the first electronic equipment 110.First electronic equipment 110 can be believed based on the buffer in data cell
Cease report executing operation, allocation of transmission resources, selection business classification etc..Then, process proceeds to S299 and terminates.
Fig. 3 shows the diagram of data cell example 300 according to an embodiment of the present disclosure.In this example, the second electronics
Equipment 160a generates data cell 300 to report the buffer information for requesting transfer resource.Data cell 300 is that media are visited
It asks control (MAC) layer data unit, and is referred to as Medium Access Control (MAC) Protocol Data Unit (MPDU) in this example.Data cell 300 includes
MAC header 310, frame 311 and Frame Check Sequence (FCS) field 312 (4 eight bit bytes).MAC header 310 includes frame control field
301 (2 eight bit bytes), Duration field 302 (2 eight bit bytes), address field 303-305 (each address field 6
Eight bit byte), Sequence Control field 306 (2 eight bit bytes), optional address field 306 (6 eight bit bytes), service quality
(QoS) control field 308 (2 eight bit bytes), high-throughput (HT) control field 320 (4 eight bit bytes) etc..
In general, in this example, the frame type of 301 mark data unit 300 of frame control field, such as management frame, data frame,
Control frame etc..In this example, 302 designated data unit 300 of Duration field will be in the period wherein transmitted.In example
In, address field 303-306 recognition purpose way address, source address and access dot address.In this example, Sequence Control field 306
Tracking sequence and/or segment number.In this example, FCS field 312 include for error checking verification and.
In embodiment, QoS control field 308 and HT control field 320 are configured to include resource request information.Showing
In example, QoS control field 308 uses multiple subfields, and such as, task identifier (TID) subfield, service terminate (EOSP) son
Field, the tactful subfield of confirmation (ACK), reserved (RSVD) subfield and transmission opportunity (TXOP) duration/sequence length
Subfield.In this example, TXOP duration/sequence length subfield has 8 bits and be used to carry buffer letter
Breath, for example, the length for the buffering byte being used for transmission.
In the example of fig. 3, HT control field 320 is configured as bearing resource solicited message.For example, HT control field
320 include two used the bit (for example, B0 and B1) for being used to indicate that HT control field 320.In the example of fig. 3, all
Such as it is set to indicate that HT control field 320 is used as the value of efficient (HE) control according to 802.11ax standard, B0 and B1.This
Outside, HT control field 320 includes control ID subfield 331 (for example, 4 bits), subfield 340 (for example, 13 bits) and sub- word
370 (for example, 13 bits) of section.The type that ID subfield 331 indicates information in subfield 340 and subfield 370 is controlled, such as,
Buffer information report, available channel report etc..In the example of fig. 3, control ID subfield 331 is configured as, and has instruction
Subfield 340 is the first buffer information report 340 and subfield 370 is the value of the second buffer information report 370.
In this example, the report 340 of the first buffer information and the second buffer information report 370 are similarly configured.?
In the example of Fig. 3, the first buffer information report 340 includes task identifier (TID) subfield 341 and the sub- word of buffer information
Section 350.In this example, TID subfield 341 specifies the task identifier for business classification, and buffer information subfield
Amount of buffered data in the classification of 350 specified services.In this example, business is classified according to priority level.For example, business classification
Priority level is used as the task identifier for business classification.
In addition, in the example of fig. 3, buffer information subfield 350 includes that zoom factor 351 and non-zoom buffer are believed
Breath 352, therefore, buffer traffic is calculated as the product of zoom factor Yu non-zoom buffer information.In this example, 1 bit quilt
It is used for non-zoom buffer information 352 for zoom factor 351 and 9 bits.For example, when zoom factor 351 is binary system
When 0, non-zoom buffer information 352 is as unit of 16 eight bit bytes, therefore buffer information subfield 350 be used to report
Business from 0 to 8176 in the range of eight bit byte；When zoom factor 351 is binary one, non-zoom buffer information
352 as unit of 2048 eight bit bytes, therefore buffer information subfield 350 be used to report from 0 to 1, and 048,636
Business in the range of eight bit byte.
In another example, 2 bits are used for zoom factor 351, and 8 bits are used for non-zoom buffer information
352.For example, when zoom factor 351 is binary system " 00 ", non-zoom buffer information 352 as unit of 8 eight bit bytes,
Therefore buffer information subfield 350 be used to report the business from 0 to 2040 in the range of eight bit byte；When scaling because
When son 351 is binary system " 01 ", non-zoom buffer information 352 is as unit of 64 eight bit bytes, therefore buffer information
Field 350 be used to report the business from 64 to 16,384 in the range of eight bit byte；When zoom factor 351 is binary system
When " 10 ", non-zoom buffer information 352 is as unit of 512 eight bit bytes, therefore buffer information subfield 350 is used for
Report the business from 512 to 131,072 in the range of eight bit byte；When zoom factor 351 is binary system " 11 ", do not contract
Buffer information 352 is put with 8,192 eight bit bytes as unit, therefore buffer information subfield 350 be used to report 8,192
Business in a range to 2,097,152 eight bit bytes.In another embodiment, 2 bits in QoS control field by with
It is used for non-zoom buffer information in zoom factor and 6 bits.
In this example, the report 340 of the first buffer information and the second buffer information report 370 are similarly configured.Cause
This, data cell 300 be used to report the buffer information for the classification of two business.
It should be noted that in this example, frame 311 is omitted, and data cell 300 do not have data payload and
Referred to as empty data frame or QoS null frame.In embodiment, empty data frame is used as control frame.For example, the second electronic equipment
160a-160n provides control information to the first electronic equipment 110 using empty data frame.
In embodiment, QoS control field 308 is configured as the first business classification belonging to carrying data cell 300
Buffer information, and HT control field 320 is configured as carrying the second business classification in addition to the classification of the first business and the
The buffer information of three business classification.In another embodiment, QoS control field 308 is configured as carrying 300 institute of data cell
The buffer information of the first business classification belonged to, HT control field 320 are configured as second that carrying includes the classification of the first business
The buffer information of business classification and the classification of third business, then, the buffer of the first business classification in HT control field 320
Information is prior to the buffer information in QoS control field 308.
Fig. 4 shows the diagram of data cell example 400 according to an embodiment of the present disclosure.In this example, the second electronics
Equipment 160a generates data cell 400, to report the buffer information for being used for resource request.
Data cell 400 includes field and subfield, the corresponding field in these fields and subfield and data cell 300
Similarly it is configured with subfield.Description to these fields and subfield has been provided above, for the sake of clarity these
The description of field and subfield will be omitted herein.
However in the example of fig. 4, the first buffer information report subfield 440 includes single TID indicator 441, TID
Subfield 445 and buffer Information subfield 450.In this example, single TID indicator 441 include 1 bit, the bit by with
It is for the classification of single business or the classification of multiple business in indicating that the first buffer information is reported.For example, when single TID is indicated
When symbol 441 has binary one, TID subfield 445 and buffer Information subfield 450 are used for single business classification.In example
In, the specified task identifier for the classification of single business of TID subfield 445, and the specified use of buffer information subfield 450
Amount of buffered data in transmission, single business classification.
When single TID indicator 441 has Binary Zero, TID subfield 445 and buffer Information subfield 450 by with
Classify in multiple business.For example, TID subfield 445 is reserved to identify multiple business classification.In this example, TID subfield
445 can be used for one or more access categories (AC) of identification service classification.Buffer information subfield 450 is specified multiple
Amount of buffered data in business classification.
In addition, in the example of fig. 4, buffer information subfield 450 includes that zoom factor 451 and non-zoom buffer are believed
Breath 452, therefore buffer traffic is calculated as the product of zoom factor Yu non-zoom buffer information.In this example, 1 bit by with
It is used for non-zoom buffer information 452 in zoom factor 451 and 8 bits.For example, when zoom factor 451 is Binary Zero
When, non-zoom buffer information 452 is as unit of 32 eight bit bytes, therefore buffer information subfield 450 be used to report
Business from 0 to 8160 in the range of eight bit byte；When zoom factor 451 is binary one, non-zoom buffer information
452 as unit of 4096 eight bit bytes, and therefore, buffer information subfield 450 be used to report from 4096 to 1, and 048,
Business in the range of 636 eight bit bytes.
In another example, 2 bits are used for zoom factor 451 and 7 bits are used for non-zoom buffer information
452.For example, when zoom factor 451 is binary system " 00 ", non-zoom buffer information 452 as unit of 8 eight bit bytes,
Therefore buffer information subfield 450 be used to report the business from 0 to 1016 in the range of eight bit byte；When scaling because
When son 451 is binary system " 01 ", non-zoom buffer information 452 is as unit of 64 eight bit bytes, therefore buffer information
Field 450 be used to report the business from 64 to 8,192 in the range of eight bit byte；When zoom factor 451 is binary system
When " 10 ", non-zoom buffer information 452 is as unit of 512 eight bit bytes, therefore buffer information subfield 450 is used for
Report the business from 512 to 65,536 in the range of eight bit byte；When zoom factor 451 is binary system " 11 ", do not contract
Buffer information 452 is put with 8,192 eight bit bytes as unit, therefore buffer information subfield 450 be used to report from 8,
Business in the range of 192 to 1,048,536 eight bit bytes.
In this example, the report 440 of the first buffer information and the second buffer information report 470 are similarly configured.?
In another example, the second buffer information report 470 is similarly matched with the first buffer information report 340 in Fig. 3 example
It sets.
It should be noted that in this example, frame 411 is omitted, and data cell 400 do not have data payload and
Referred to as empty data frame or QoS null frame.In embodiment, empty data frame is used as control frame.For example, the second electronic equipment
160a-160n provides control information to the first electronic equipment 110 using empty data frame.
Fig. 5 shows the diagram of aggregate data unit example 500 according to an embodiment of the present disclosure.In this example, second
Electronic equipment 160a generates aggregate data unit 500.Aggregate data unit 500 is MAC layer data cell, and in this example by
Referred to as it polymerize MPDU (A-MPDU).
Aggregate data unit 500 includes multiple subframes, such as, the first subframe 510 and the second subframe 520 in Fig. 5.Subframe
Including delimiter, MPDU and filling.For example, the first subframe 510 is filled out including the first delimiter 511, the first MPDU 512 and first
513 are filled, the second subframe 520 includes the second delimiter 521, the 2nd MPDU 522 and the second filling 523.
In embodiment, multiple data cells (such as, the first MPDU 512 and second in aggregate data unit 500
MPDU 522) it can have any suitable format.In this example, the second electronic equipment 160a generates aggregate data unit 500,
Wherein the first MPDU 512 and the 2nd MPDU 522 is QoS null frame.In this example, the first MPDU 512 and the 2nd MPDU 522
Carrying is configured as the buffer information of different business classification.In this example, the first MPDU 512 and the 2nd MPDU 522
With different task identifiers (TID), therefore the QoS control field of the first MPDU 512 and the 2nd MPDU 522 has and is directed to
The different buffer informations of different business classification.In embodiment, the first electronic equipment 110 uses more STA blocks confirmation (M-BA)
To confirm the received QoS null frame with different TID.For example, M-BA includes the first MPDU 512 that instruction has the first TID
Receive successful first instruction, and successful second instruction of the reception including indicating the 2nd MPDU 522 with the 2nd TID.
In another embodiment, the first electronic equipment 110 does not confirm the received QoS null frame with different TID.
Fig. 6 shows the diagram 600 according to an embodiment of the present disclosure for service selection.The diagram illustrate business point
The table 610 of class.In the example of fig. 6, four access categories are defined.This four access categories correspond to: answering for voice
Communication session (VOICE) communicates i.e. enough applications for the communication session (VIDEO) of Video Applications, for doing the best
Communication session (BEST EFFORT) and for background communication, that is, enough applications communication session (BACKGROUND).
In addition, in the example of fig. 6, for each access category, two priority level shared access classifications.In example
In, each priority level in eight priority levels is addressable using three-bit word.In embodiment, business is according to excellent
First grade and be classified and buffer, and priority is used as task identifier (TID) in this example.
According to the aspect of the disclosure, is included using the downlink and uplink transmission of A-MPDU and carry out autonomous access category
And/or the business of auxiliary access category.In embodiment, multi-user transmission chance accesses (EDCA) by enhanced distributed channel
And be acquired, AP equipment/STA equipment can select different business to classify for different STA equipments.In embodiment, each
Access category has corresponding backoff counter.In this embodiment, when specific backoff counter counts downwards during EDCA
When to zero, the length of multi-user transmission chance is defined by access category corresponding with specific backoff counter.In this embodiment,
When two or more backoff counters count down to zero downwards simultaneously, then in access corresponding with two or more backoff counters
Among classification, the access category with highest priority is selected, and the length of multi-user transmission chance is by with highest priority
Access category definition.
In another embodiment, multi-user transmission chance is acquired by target wakeup time (TWT), then multi-user
The length of transmission opportunity is based on TWT service window and is defined.
In embodiment, AP equipment determines the main access category transmitted for downlink transmission or uplink.Showing
In example, AP equipment or STA equipment are based on main access category and generate single TID A-MPDU, the A-MPDU 620 in such as Fig. 6.When
There is no (for example, the buffer for main access category is empty) when available MPDU from main access category, AP is set in this example
Standby or STA equipment determines auxiliary access category.Then, AP equipment or STA equipment are based on auxiliary access category and generate single TID A-
A-MPDU 630 in MPDU, such as Fig. 6.In another embodiment, STA equipment has about polymerizeing in single TID A-MPDU
The final decision of the task identifier of MPDU.
In this example, when allowing more TID A-MPDU, AP equipment or STA equipment polymerize to come independently first in A-MPDU
The MPDU of access category.When A-MPDU has remaining space, AP equipment or STA equipment determine auxiliary access category, and in A-
It polymerize the MPDU from auxiliary access category in MPDU (such as, the A-MPDU 640 in Fig. 6).In another embodiment, STA equipment
Final decision with the task identifier about the polymerization MPDU in more TID A-MPDU.
According to the aspect of the disclosure, when AP equipment fails to receive multi-user block confirmation, AP equipment is in A-MPDU or VHT
Polymeric block confirmation request (BAR) frame in single MPDU, and transmit the signal of the carrying single MPDU of A-MPDU or VHT.
Fig. 7 shows the example of the A-MPDU 710-730 according to the embodiment of the present disclosure.
A-MPDU 710 includes multiple BAR frames 712 and 715.In this example, each BAR frame in BAR frame 712 and 715 is asked
The block of different TID is asked to confirm.
It should be noted that A-MPDU 710 may include or not include other suitable frames, data frame, management frame etc..
In this example, A-MPDU 710 includes trigger frame 718.In another example, A-MPDU 710 does not include trigger frame 718.
A-MPDU 720 includes more TID BAR frames 722.In one example, more TID BAR frames 722 request multiple TID's
Block confirmation.
It should be noted that A-MPDU 720 may include or not include other suitable frames, data frame, management frame etc..
In this example, A-MPDU 720 includes trigger frame 728.In another example, A-MPDU 720 does not include trigger frame 728.
A-MPDU 730 includes trigger frame 732.Trigger frame includes carrying the specific fields of the block confirmation request of multiple TID.
When implemented in hardware, hardware may include in discrete assembly, integrated circuit, specific integrated circuit (ASIC) etc.
It is one or more.
It is proposed as its exemplary specific embodiment although being had been combined in terms of the disclosure and is described, it can be with
These examples are substituted, modifications and variations.Correspondingly, embodiment set forth herein is intended to illustrative and not restrictive
's.It can modify in the case where not departing from illustrated the scope of the claims.
Claims (20)
1. a kind of device for wireless communications, comprising:
Transceiver, the transceiver are configured as transmitting and receiving wireless signal；And
Processing circuit, the processing circuit are configured as:
The field of buffer information report is configured in data cell；
Determining the first zoom factor for scaling the first value and the second zoom factor for scaling second value, described first
The buffer traffic of value instruction first category, the buffer traffic of the second value instruction classification；
The field is configured to include there is first zoom factor of first value and with described in the second value
Second zoom factor；And
The data cell is supplied to the transceiver to be used for transmission another device,
Resource of another device distribution for the transmission between two described devices.
2. the apparatus according to claim 1, wherein the processing circuit is configured as reporting using instruction buffer information
Identifier Control Subfield is set.
3. the apparatus according to claim 1, wherein to correspond respectively to business excellent for the first category and the second category
First grade, and the processing circuit is configured to include the task identifier of the service priority in the field.
4. the apparatus according to claim 1, wherein the first category includes multiple service priority, and the processing
Circuit is configured to determine that first zoom factor for scaling first value, and first value indicates the multiple industry
The sum of the buffer traffic for priority of being engaged in.
5. the apparatus according to claim 1, wherein the data cell is null frame, the null frame do not have data field,
And there is service quality (QoS) field, service quality (QoS) field includes specific transactions belonging to the data cell
The buffer traffic information of classification.
6. device according to claim 5, wherein when specific transactions classification is the classification of the first business and the second business
When a business in classification is classified, the buffer information report in the field dominates the buffer traffic letter of qos field
Breath.
7. device according to claim 5, wherein the processing circuit be configured as by the data cell with one or
The aggregate data unit is supplied to the transceiver to generate aggregate data unit by a number of other data cell polymerizations
To be used for transmission other devices.
8. the apparatus according to claim 1, wherein the processing circuit is configured as configuration service quality (QoS) control word
Two bits in a control field in section and efficient (HE) modification high-throughput (HT) control field, to be scaled from four
Selected in value one as first zoom factor.
9. a kind of method for wireless communications, comprising:
The field of buffer information report is configured in data cell by device；
Determining the first zoom factor for scaling the first value and the second zoom factor for scaling second value, described first
The buffer traffic of value instruction first category, the buffer traffic of the second value instruction classification；
Include by first zoom factor with first value and second zoom factor with the second value
In the field in the data cell；And
The wireless signal transmission of the data cell will be carried to another device, another device distribution is used for two dresses
The resource of transmission between setting.
10. according to the method described in claim 9, being wherein configured to buffer in the data cell by described device
The field of information report further comprises:
Using the identifier of instruction buffer information report, Control Subfield is set.
11. according to the method described in claim 9, wherein to correspond respectively to business excellent for the first category and the second category
First grade, and the described method includes:
It will include in the field for the task identifier of the service priority.
12. according to the method described in claim 9, wherein the first category includes multiple service priority, and the side
Method includes:
Determine first zoom factor for scaling first value, first value indicates the slow of the service priority
Rush the sum of business.
13. according to the method described in claim 9, wherein the data cell is null frame, the null frame do not have data field,
And there is service quality (QoS) field, service quality (QoS) field includes specific transactions belonging to the data cell
The buffer traffic information of classification.
14. according to the method for claim 13, wherein when specific transactions classification is the classification of the first business and the second industry
When a business in business classification is classified, the buffer information report in the field dominates the described of the qos field
Buffer traffic information.
15. according to the method described in claim 9, further comprising:
The data cell is polymerize with one or more of the other data cell to generate aggregate data unit；And
The wireless signal transmission of the aggregate data unit will be carried to other devices.
16. according to the method described in claim 9, further comprising:
Configure a control word in service quality (QoS) control field and efficient (HE) modification high-throughput (HT) control field
Section in two bits, using selected from four scale values one as first zoom factor.
17. a kind of non-transitory computer-readable medium for storing program instruction, described program instruction is for so that in device
Processor executes the operation for communication, and the operation includes:
The field of buffer information report is configured in data cell；
Determining the first zoom factor for scaling the first value and the second zoom factor for scaling second value, described first
The buffer traffic of value instruction first category, the buffer traffic of the second value instruction classification；
Include by first zoom factor with first value and second zoom factor with the second value
In the field in the data cell；And
The data cell is supplied to transceiver circuit so that the wireless signal transmission of the data cell will be carried to another dress
It sets, resource of another device distribution for the transmission between two described devices.
18. non-transitory computer-readable medium according to claim 17, wherein the operation further comprises:
Using the identifier of instruction buffer information report, Control Subfield is set.
19. non-transitory computer-readable medium according to claim 17, wherein the first category includes multiple industry
Business priority, and the operation includes:
Determine first zoom factor for scaling first value, first value indicates the slow of the service priority
Rush the sum of business.
20. non-transitory computer-readable medium according to claim 17, wherein the data cell is null frame, it is described
Null frame does not have data field and has service quality (QoS) field, and service quality (QoS) field includes the number
The buffer traffic information classified according to specific transactions belonging to unit.
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